Abstract: The present invention relates to a finger-worn input device, which comprises a movement detecting unit, a main controller and a connection structure. After being assembled, users can insert their finger in between the movement detecting unit and the main controller in order to move the movement detecting unit and to press a key. The main controller receives a movement signal and a key signal, converts these signals into a computer control signal, which is then transmitted to a computer for further process through a wired or wireless transmission method. By using the finger-worn input device with the structure mentioned above, the user usage is more convenient and the input device can be minimized. In addition, the present invention also discloses an input method applying the finger-worn input device.

Abstract: An input device has a body for receiving a circuit board therein. The body has a retaining device which is moved to secure or release a wireless receiver in or from an exterior-facing compartment in the body.